/***************************************************************************
 *   Copyright (C) 2010 by Oleg Goncharov  *
 *   $EMAIL$                           *                          
 *                                                                         *
 *   This file is part of ChessVision.                                     *
 *                                                                         *
 *   ChessVision is free software; you can redistribute it and/or modify   *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#ifndef CLKPOINTDETECTOR_H
#define CLKPOINTDETECTOR_H

#include <opencv/cv.h>
#include <opencv/cxcore.h>

#include "geomtypes.h"
#include "cpointdetector.h"


/*
Lucas-Kanade point tracker
*/

class CLKPointDetector : public CPointDetector {
	IplImage *prevImage;
	IplImage *pyramid1, *pyramid2;
	IplImage *sample;
	//hardcoded number of features
	CvPoint2D32f oldFeatures[4];
	CvPoint2D32f newFeatures[4];
	char foundFeatures[4];
	float featuresError[4];
	//buffer for full-search results
	IplImage *result;
	//threshold for full-search
	double threshold;
public:
	CLKPointDetector(const IplImage *sample_);
	bool DetectPoint(const IplImage *img, cv::Point2f &point);
	~CLKPointDetector();
};

#endif
